259 lines
8.5 KiB
C++
259 lines
8.5 KiB
C++
/*
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Open Asset Import Library (ASSIMP)
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----------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the ASSIMP Development Team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file Declaration of the LWO importer class. */
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#ifndef AI_LWOLOADER_H_INCLUDED
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#define AI_LWOLOADER_H_INCLUDED
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#include "../include/aiTypes.h"
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#include "BaseImporter.h"
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#include "LWOFileData.h"
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#include "MaterialSystem.h"
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struct aiTexture;
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struct aiNode;
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namespace Assimp {
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using namespace LWO;
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// ---------------------------------------------------------------------------
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/** Clas to load LWO files
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*/
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class LWOImporter : public BaseImporter
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{
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friend class Importer;
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protected:
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/** Constructor to be privately used by Importer */
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LWOImporter();
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/** Destructor, private as well */
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~LWOImporter();
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public:
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// -------------------------------------------------------------------
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/** Returns whether the class can handle the format of the given file.
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* See BaseImporter::CanRead() for details. */
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bool CanRead( const std::string& pFile, IOSystem* pIOHandler) const;
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// -------------------------------------------------------------------
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/** Called prior to ReadFile().
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* The function is a request to the importer to update its configuration
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* basing on the Importer's configuration property list.
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*/
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void SetupProperties(const Importer* pImp);
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protected:
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// -------------------------------------------------------------------
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/** Called by Importer::GetExtensionList() for each loaded importer.
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* See BaseImporter::GetExtensionList() for details
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*/
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void GetExtensionList(std::string& append)
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{
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append.append("*.lwo");
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}
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// -------------------------------------------------------------------
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/** Imports the given file into the given scene structure.
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* See BaseImporter::InternReadFile() for details
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*/
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void InternReadFile( const std::string& pFile, aiScene* pScene,
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IOSystem* pIOHandler);
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private:
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// -------------------------------------------------------------------
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/** Loads a LWO file in the older LWOB format (LW < 6)
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*/
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void LoadLWOBFile();
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// -------------------------------------------------------------------
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/** Loads a LWO file in the newer LWO2 format (LW >= 6)
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*/
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void LoadLWO2File();
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// -------------------------------------------------------------------
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/** Loads a surface chunk from an LWOB file
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* @param size Maximum size to be read, in bytes.
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*/
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void LoadLWOBSurface(unsigned int size);
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// -------------------------------------------------------------------
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/** Loads a surface chunk from an LWO2 file
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* @param size Maximum size to be read, in bytes.
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*/
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void LoadLWO2Surface(unsigned int size);
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// -------------------------------------------------------------------
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/** Loads a texture block from a LWO2 file.
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* @param size Maximum size to be read, in bytes.
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* @param type Type of the texture block - PROC, GRAD or IMAP
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*/
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void LoadLWO2TextureBlock(uint32_t type, unsigned int size );
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// -------------------------------------------------------------------
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/** Loads an image map from a LWO2 file
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* @param size Maximum size to be read, in bytes.
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* @param tex Texture object to be filled
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*/
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void LoadLWO2ImageMap(unsigned int size, LWO::Texture& tex );
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void LoadLWO2Gradient(unsigned int size, LWO::Texture& tex );
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void LoadLWO2Procedural(unsigned int size, LWO::Texture& tex );
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// loads the header - used by thethree functions above
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void LoadLWO2TextureHeader(unsigned int size, LWO::Texture& tex );
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// -------------------------------------------------------------------
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/** Loads the LWO tag list from the file
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* @param size Maximum size to be read, in bytes.
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*/
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void LoadLWOTags(unsigned int size);
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// -------------------------------------------------------------------
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/** Load polygons from a POLS chunk
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* @param length Size of the chunk
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*/
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void LoadLWOPolygons(unsigned int length);
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// -------------------------------------------------------------------
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/** Load polygons from a PNTS chunk
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* @param length Size of the chunk
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*/
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void LoadLWOPoints(unsigned int length);
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// -------------------------------------------------------------------
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/** Count vertices and faces in a LWOB/LWO2 file
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*/
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void CountVertsAndFaces(unsigned int& verts,
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unsigned int& faces,
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LE_NCONST uint16_t*& cursor,
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const uint16_t* const end,
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unsigned int max = 0xffffffff);
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// -------------------------------------------------------------------
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/** Read vertices and faces in a LWOB/LWO2 file
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*/
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void CopyFaceIndices(LWO::FaceList::iterator& it,
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LE_NCONST uint16_t*& cursor,
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const uint16_t* const end,
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unsigned int max = 0xffffffff);
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// -------------------------------------------------------------------
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/** Resolve the tag and surface lists that have been loaded.
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* Generates the mMapping table.
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*/
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void ResolveTags();
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// -------------------------------------------------------------------
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/** Computes a proper texture form a procedural gradient
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* description.
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* @param grad Gradient description
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* @param out List of output textures. The new texture should
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* be added to the list, if the conversion was successful.
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* @return true if successful
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*/
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bool ComputeGradientTexture(LWO::GradientInfo& grad,
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std::vector<aiTexture*>& out);
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// -------------------------------------------------------------------
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/** Parse a string from the current file position
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*/
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void ParseString(std::string& out,unsigned int max);
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// -------------------------------------------------------------------
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/** Adjust a texture path
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*/
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void AdjustTexturePath(std::string& out);
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// -------------------------------------------------------------------
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/** Convert a LWO surface description to an ASSIMP material
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*/
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void ConvertMaterial(const LWO::Surface& surf,MaterialHelper* pcMat);
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// -------------------------------------------------------------------
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/** Generate the final node graph
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* Unused nodes are deleted.
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* @param apcNodes Flat list of nodes
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*/
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void GenerateNodeGraph(std::vector<aiNode*>& apcNodes);
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protected:
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/** true if the file is a LWO2 file*/
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bool mIsLWO2;
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/** Temporary list of layers from the file */
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LayerList* mLayers;
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/** Pointer to the current layer */
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LWO::Layer* mCurLayer;
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/** Temporary tag list from the file */
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TagList* mTags;
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/** Mapping table to convert from tag to surface indices.
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0xffffffff indicates that a no corresponding surface is available */
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TagMappingTable* mMapping;
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/** Temporary surface list from the file */
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SurfaceList* mSurfaces;
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/** file buffer */
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LE_NCONST uint8_t* mFileBuffer;
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/** Size of the file, in bytes */
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unsigned int fileSize;
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/** Output scene */
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aiScene* pScene;
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/** Configuration option: X and Y size of gradient maps */
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unsigned int configGradientResX,configGradientResY;
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};
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} // end of namespace Assimp
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#endif // AI_LWOIMPORTER_H_INCLUDED
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